<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
  //无参无返回值方法
  function f1() {
    console.log("f1");
  }
  //调用方法
  f1();
  //有参无返回值
  function f2(name,age) {
    console.log(name+":"+age);
  }
  f2("张飞",18);
  //无参有返回值
  function f3() {
    return "我是返回值";
  }
  let info = f3();
  console.log(info);
  //有参有返回值
  function f4(x,y) {
    return x*y;
  }
  let  result = f4(5,9);
  console.log(result);

  //第二种声明方法的方式
  let f5 = function (name,age) {
      console.log(name+":"+age);
  }
  f5("关羽",30);

  //第三种声明方法的方式
  let f6 = new Function("name","age","console.log(name+':'+age)");
  f6("刘备","50");







</script>
</body>
</html>